
jQuery.extend({


	createUploadIframe: function(id, uri)
	{
		//create frame
		var frameId = 'jUploadFrame' + id;

		if(window.ActiveXObject) {
			var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');
			if(typeof uri== 'boolean'){
				io.src = 'javascript:false';
			}
			else if(typeof uri== 'string'){
				io.src = uri;
			}
		}
		else {
			var io = document.createElement('iframe');
			io.id = frameId;
			io.name = frameId;
		}
		io.style.position = 'absolute';
		io.style.top = '-1000px';
		io.style.left = '-1000px';

		document.body.appendChild(io);

		return io
	},
	createUploadForm: function(id, fileElementId, pars)
	{
		//create form	
		var formId = 'jUploadForm' + id;
		var fileId = 'jUploadFile' + id;
		var form = $('<form  action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');
		for(prop in pars){
			var tmpIpt = $('<input type="hidden" name="'+prop+'" value="" />');
			tmpIpt.val(pars[prop]);
			form.append(tmpIpt);
		}
		var oldElement = $('#' + fileElementId);
		var newElement = $(oldElement).clone();
		$(oldElement).attr('id', fileId);
		$(oldElement).before(newElement);
		$(oldElement).appendTo(form);
		//set attributes
		$(form).css('position', 'absolute');
		$(form).css('top', '-1200px');
		$(form).css('left', '-1200px');
		$(form).appendTo('body');
		return form;
	},

	ajaxFileUpload: function(s) {
		// TODO introduce global settings, allowing the client to modify them for all requests, not only timeout
		s = jQuery.extend({}, jQuery.ajaxSettings, s);
		var pars = (('params' in s)?s.params:{});
		var id = new Date().getTime()
		var form = jQuery.createUploadForm(id, s.fileElementId, pars);
		var io = jQuery.createUploadIframe(id, s.secureuri);
		var frameId = 'jUploadFrame' + id;
		var formId = 'jUploadForm' + id;
		// Watch for a new set of requests
		if ( s.global && ! jQuery.active++ )
		{
			jQuery.event.trigger( "ajaxStart" );
		}
		var requestDone = false;
		// Create the request object
		var xml = {}
		if ( s.global )
			jQuery.event.trigger("ajaxSend", [xml, s]);
		// Wait for a response to come back
		var uploadCallback = function(isTimeout)
		{
			var io = document.getElementById(frameId);
			try
			{
				if(io.contentWindow)
				{
					xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;
					xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;

				}else if(io.contentDocument)
				{
					xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;
					xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;
				}
			}catch(e)
			{
				jQuery.handleError(s, xml, null, e);
			}
			if ( xml || isTimeout == "timeout")
			{
				requestDone = true;
				var status;
				try {
					status = isTimeout != "timeout" ? "success" : "error";
					console.log(xml);
					// Make sure that the request was successful or notmodified
					if ( status != "error" )
					{
						// process the data (runs the xml through httpData regardless of callback)
						var data = jQuery.uploadHttpData( xml, s.dataType );
						console.log(data);
						// If a local callback was specified, fire it and pass it the data
						if ( s.success )
							s.success( data, status );

						// Fire the global callback
						if( s.global )
							jQuery.event.trigger( "ajaxSuccess", [xml, s] );
					} else
						jQuery.handleError(s, xml, status);
				} catch(e)
				{
					status = "error";
					// jQuery.handleError(s, xml, status, e);
					console.log(e)
				}

				// The request was completed
				if( s.global )
					jQuery.event.trigger( "ajaxComplete", [xml, s] );

				// Handle the global AJAX counter
				if ( s.global && ! --jQuery.active )
					jQuery.event.trigger( "ajaxStop" );

				// Process result
				if ( s.complete )
					s.complete(xml, status);

				jQuery(io).unbind()

				setTimeout(function()
				{	try
				{
					$(io).remove();
					$(form).remove();

				} catch(e)
				{
					jQuery.handleError(s, xml, null, e);
				}

				}, 100)

				xml = null

			}
		}
		// Timeout checker
		if ( s.timeout > 0 )
		{
			setTimeout(function(){
				// Check to see if the request is still happening
				if( !requestDone ) uploadCallback( "timeout" );
			}, s.timeout);
		}
		try
		{
			// var io = $('#' + frameId);
			var form = $('#' + formId);
			$(form).attr('action', s.url);
			$(form).attr('method', 'POST');
			$(form).attr('target', frameId);
			if(form.encoding)
			{
				form.encoding = 'multipart/form-data';
			}
			else
			{
				form.enctype = 'multipart/form-data';
			}
			$(form).submit();

		} catch(e)
		{
			jQuery.handleError(s, xml, null, e);
		}
		if(window.attachEvent){
			document.getElementById(frameId).attachEvent('onload', uploadCallback);
		}
		else{
			document.getElementById(frameId).addEventListener('load', uploadCallback, false);
		}
		return {abort: function () {}};

	},

	uploadHttpData: function( r, type ) {
		var data = !type;
		data = type == "xml" || data ? r.responseXML : r.responseText;
		// If the type is "script", eval it in global context
		if ( type == "script" )
			jQuery.globalEval( data );
		// Get the JavaScript object, if JSON is used.
		if ( type == "json" )
			eval( "data = " + data );
		// evaluate scripts within html
		if ( type == "html" )
			jQuery("<div>").html(data).evalScripts();
		//alert($('param', data).each(function(){alert($(this).attr('value'));}));
		return data;
	}
})



var AjaxUploader = function(){
	return {
		uploadTempUrl:'',

		init:function(){
			var tempUrl = this.uploadTempUrl;

			$('div.ajax-uploader').each(function(){
				var $uploader = $(this);
				if($uploader.hasClass('__inited')){
					return;  //防止重复初始化
				}else{
					$uploader.addClass('__inited');
				}
				var $preview = $('<div></div>').appendTo($uploader);
				var $fileWrap = $('<div></div>').appendTo($uploader);
				var isMult = $uploader.hasClass('mult');
				var name = $uploader.attr('id');

				//初始化图片预览区域
				$uploader.find('input[type=hidden]').each(function(){
					if($(this).val() != ''){
						if ($(this).val().indexOf('doc') == -1 && $(this).val().indexOf('xls') == -1 && $(this).val().indexOf('zip') == -1 && $(this).val().indexOf('rar') == -1 ){
							addFile(true,$(this).val());
						}else {
							addFile(false,$(this).val());
						}
					}
				});
				setFileWarp();
				$preview.on('changed', function(){
					setInput();
					setFileWarp();
				});

				//设置hidden域
				function setInput(){
					//console.log(' setInput');
					if(isMult){
						$uploader.find('input[name=' + name + ']').remove();
						$preview.children('div').each(function(){
							$('<input type="hidden" name="' + name + '[]" value="' + $(this).data('path') + '">').appendTo($uploader);
						});
					}else{
						$uploader.find('input[name='+ name + ']').val($preview.children('div').data('path'));
					}
				}

				//设置文件上传组件
				function setFileWarp(){
					//console.log(' setFileWarp');
					$fileWrap.empty();
					if(!isMult && $uploader.find('input[type=hidden]').val() != ''){
						return;
					}
					var fileID = name + "-file-id";
					var $file = $('<input type="file"  name="'+ fileID +'" id="'+ fileID + '"  value=""  style="opacity: 0; position: absolute; width:120px">').on('change', function(){
						console.log($(this).val());
						if( $(this).val() != ''){
							uploadToTemp(fileID);
						}
					});
					$('<span class="btn blue"><i class="fa fa-plus"></i><span > 选择文件 ... </span></span>').prepend($file).appendTo($fileWrap);
				}

				//在图片预览区域增加图片
				function addFile(is_image,path){
					console.log(is_image +',路径为：'+path);
					if (is_image){
						var $span = $('<div class="ajax-uploader-image" data-path="' + path + '"><img class="img-rounded zoomify" src="/' + path + '" style="max-width:120px;max-height:90px; margin:5px 15px 5px 0; "></div>');
					} else {
						if (path.indexOf('zip') !== -1 || path.indexOf('rar') !== -1){
							var $span = $('<div class="ajax-uploader-image" data-path="' + path + '"><a href="/'+path+'"><img src="/static/img/zip.png" style="max-width:120px;max-height:90px; margin:5px 15px 5px 0; "></a></div>');

						} else{
							var $span = $('<div class="ajax-uploader-image" data-path="' + path + '"><a href="/'+path+'"><img src="/static/img/docx.png" style="max-width:120px;max-height:90px; margin:5px 15px 5px 0; "></a></div>');
						}
					}
					$('<button type="button" class="btn delete"><i class="fa fa-trash"></i><span> 删除 </span></button>').on('click',function(){
						$span.remove();
						$preview.trigger('changed');
					}).appendTo($span);
					$span.appendTo($preview);
					$preview.trigger('changed');
				}

				//上传文件
				function uploadToTemp(fileID){
					//console.log(fileID);
					$.ajaxFileUpload(
						{
							url: tempUrl + fileID,
							secureuri:false,
							fileElementId:fileID,
							dataType: 'json',
							success: function (data, status)
							{
								console.log(data);
								if(typeof(data.error) != 'undefined' && data.error != ''){
									alert(data.error);
								}else{
									addFile(data.is_image,data.path);
								}
							},error: function (data, status, e)	{alert(e);}
						}
					)
					return false;
				}
			});
		},
		model_init:function(modal_id){
			var tempUrl = this.uploadTempUrl;
			if (typeof (modal_id) == 'string'){
				selector = '#'+modal_id+' .ajax-uploader';
			} else {
				selector = '#'+modal_id.id+' .ajax-uploader';
			}
			$(selector).each(function(){
				var $uploader = $(this);
				if($uploader.hasClass('__inited')){
					return;  //防止重复初始化
				}else{
					$uploader.addClass('__inited');
				}
				var $preview = $('<div></div>').appendTo($uploader);
				var $fileWrap = $('<div></div>').appendTo($uploader);
				var isMult = $uploader.hasClass('mult');
				var name = $uploader.attr('id');

				//初始化图片预览区域
				$uploader.find('input[type=hidden]').each(function(){
					if($(this).val() != ''){
						console.log($(this).val().indexOf('doc'));
						if ($(this).val().indexOf('doc') == -1 && $(this).val().indexOf('xls') == -1 && $(this).val().indexOf('zip') == -1 && $(this).val().indexOf('rar') == -1 ){
							addFile(true,$(this).val());
						}else {
							addFile(false,$(this).val());
						}

					}
				});
				setFileWarp();
				$preview.on('changed', function(){
					setInput();
					setFileWarp();
				});

				//设置hidden域
				function setInput(){
					//console.log(' setInput');
					if(isMult){
						$uploader.find('input[name=' + name + ']').remove();
						$preview.children('div').each(function(){
							$('<input type="hidden" name="' + name + '[]" value="' + $(this).data('path') + '">').appendTo($uploader);
						});
					}else{
						$uploader.find('input[name='+ name + ']').val($preview.children('div').data('path'));
					}
				}

				//设置文件上传组件
				function setFileWarp(){
					//console.log(' setFileWarp');
					$fileWrap.empty();
					if(!isMult && $uploader.find('input[type=hidden]').val() != ''){
						return;
					}
					var fileID = name + "-file-id";
					var $file = $('<input type="file"  name="'+ fileID +'" id="'+ fileID + '"  value=""  style="opacity: 0; position: absolute; width:120px">').on('change', function(){
						if( $(this).val() != ''){
							uploadToTemp(fileID);
						}
					});
					$('<span class="btn blue"><i class="fa fa-plus"></i><span > 选择文件 ... </span></span>').prepend($file).appendTo($fileWrap);
				}

				//在图片预览区域增加图片
				function addFile(is_image,path){
					console.log(is_image+',路径为：'+path);
					if (is_image){
						var $span = $('<div class="ajax-uploader-image" data-path="' + path + '"><img class="img-rounded zoomify" src="/' + path + '" style="max-width:120px;max-height:90px; margin:5px 15px 5px 0; "></div>');
					} else {
						if (path.indexOf('zip') !== -1 || path.indexOf('rar') !== -1){
							var $span = $('<div class="ajax-uploader-image" data-path="' + path + '"><a href="/'+path+'"><img src="/static/img/zip.png" style="max-width:120px;max-height:90px; margin:5px 15px 5px 0; "></a></div>');

						} else{
							var $span = $('<div class="ajax-uploader-image" data-path="' + path + '"><a href="/'+path+'"><img src="/static/img/docx.png" style="max-width:120px;max-height:90px; margin:5px 15px 5px 0; "></a></div>');
						}

					}

					$('<button type="button" class="btn delete"><i class="fa fa-trash"></i><span> 删除 </span></button>').on('click',function(){
						$span.remove();
						$preview.trigger('changed');
					}).appendTo($span);
					$span.appendTo($preview);
					$preview.trigger('changed');
				}

				//上传文件
				function uploadToTemp(fileID){
					//console.log(fileID);
					$.ajaxFileUpload(
						{
							url: tempUrl + fileID,
							secureuri:false,
							fileElementId:fileID,
							dataType: 'json',
							success: function (data, status)
							{
								if(typeof(data.error) != 'undefined' && data.error != ''){
									alert(data.error);
								}else{
									addFile(data.is_image,data.path);
								}
							},error: function (data, status, e)	{alert(e);}
						}
					)
					return false;
				}
			});
		},
	}
}();
